Hibernate saveorupdate not updating
Finally, persist doesn’t return anything so we need to use the persisted object to get the generated identifier value. Transaction; import com.journaldev.hibernate.model.
Second difference is that we can use method only within the boundary of a transaction, so it’s safe and takes care of any cascaded objects. Hibernate Util; public class Hibernate Persist Example Hibernate: insert into EMPLOYEE (emp_name, emp_salary) values (?
save() method saves records into database by INSERT SQL query, Generates a new identifier and return the Serializable identifier back. Student; public class Save Test log4j: WARN No appenders could be found for logger (org. log4j: WARN Please initialize the log4j system properly. Hibernate: insert into STUDENT (degree, name, phone, roll, id) values (?
On the other hand save Or Update() method either INSERT or UPDATE based upon existence of object in database.
successfully saved Above code will print the generated primary key because save() method will return the generated identifier, but the below line of code will throw a compile time error because persist() method return type is void.
Session interface in Hibernate provides a couple of methods to move an object from new or transient state to persistent state e.g. In the above example just change the name and phone number.
If persistence object already exists in database then UPDATE SQL will execute and if there is no corresponding object in database than INSERT will run.
Below is example of both save and save Or Update() method.
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Hibernate Session is the interface between java application and hibernate framework.